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1.0 Introduction <br />As anticipated in the Probable Hydrological Consequences in Section 2.05.6(3), water <br />passing through the backfilled spoil is generating a spring. As of spring 2014, this spoil <br />spring is located at the toe of a backfill slope within the latter backfill area of the Johnson <br />(WFC) property. This spring is 10 -15 feet from the bottom of the mine excavation, and <br />about 10 feet below the anticipated final backfill elevation. Map 2.05.3(3) -21 shows the <br />spoil spring, along with the topography of the partially backfilled Johnson (WFC) <br />property. <br />North of the spoil spring location is Pond 013 and its surroundings. Prime farmland is to <br />be restored in this area as part of final reclamation. In the interest of protecting the prime <br />farmland soils from being exposed to spoil water, including the problems caused with <br />alfalfa (the crop to be grown on the restored prime farmland) when it is over watered, <br />Western Fuels- Colorado (WFC) will install a trench drain collection system south of <br />Pond 013. This trench drain will intercept the spoil water, and convey it to a pipe which <br />will discharge directly into Pond 013. <br />2.0 Location <br />The trench drain will be installed along the toe of the mining highwall on the Johnson <br />(WFC) property. Map 2.05.3(3) -21 shows this location. There will be three segments to <br />the trench drain: A, B, and C. Segments A and B will run along the mining highwall, while <br />Segment C will consist both of a rock drain extending to the south east, as well as the <br />solid pipe which will convey the spoil water to its discharge. The spoil water pipe will <br />have a valve and T joint installed near the discharge to facilitate rerouting of the spoil <br />water when Pond 013 is reclaimed, if needed. <br />March 2014 (TR 63) Attachment 2.05.3(3) -25 -3 <br />